Rubber crawler

Abstract

A rubber crawler includes a rubber belt, a main cord layer that is incorporated within the rubber belt and includes a main cord extending around the crawler circumferential direction, a bias cord layer that is incorporated further to the crawler circumferential outside than the main cord layer and is configured from bias cords extending at an angle with respect to the crawler circumferential direction, a bias cord layer that is interposed between the bias cord layer and the main cord layer, and is configured from bias cords extending at an angle with respect to the crawler circumferential direction so as to intersect the first bias cords, and a reinforcement cord layer that is interposed between the bias cord layer and the bias cord layer, and is configured from reinforcement cords extending in the crawler width direction.

The invention claimed is: 
     
       1. A rubber crawler comprising:
 an endless rubber body that is trained around a plurality of wheels; 
 a main cord layer that is incorporated within the rubber body and includes a main cord extending around a rubber body circumferential direction; 
 a first bias cord layer that is incorporated within the rubber body further to a rubber body circumferential outside than the main cord layer and is configured from first bias cords arranged side-by-side around the rubber body circumferential direction, the first bias cords extending at an angle with respect to the rubber body circumferential direction; 
 a second bias cord layer that is interposed between the first bias cord layer and the main cord layer, and is configured from second bias cords arranged side-by-side around the rubber body circumferential direction and extending at an angle with respect to the rubber body circumferential direction so as to intersect the first bias cords; and 
 a first reinforcement cord layer that is interposed between the first bias cord layer and the second bias cord layer, and is configured from reinforcement cords extending in a rubber body width direction, the reinforcement cords arranged side-by-side around the rubber body circumferential direction, 
 wherein a second reinforcement cord layer is interposed between the second bias cord layer and the main cord layer. 
 
     
     
       2. The rubber crawler of  claim 1 , wherein a third reinforcement cord layer is incorporated at a rubber body circumferential outside of the first bias cord layer. 
     
     
       3. The rubber crawler of  claim 1 , wherein the first bias cords and the second bias cords are angled in mutually opposing directions from each other with respect to the rubber body circumferential direction.